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Multiple Chemical Sensitivity (Idiopathic Environmental Intolerance)

It is known that chemicals cause many human diseases. Some of the chemicals that have been shown to be dangerous to people include:

  • Tobacco smoke. This is the major cause of lung cancer.

  • Asbestos. This causes mesothelioma. This is an aggressive cancer that develops in the linings of the lungs, heart, or abdomen. This also causes lung cancer, asbestosis, and an increased risk of gastrointestinal cancer.

  • Kepone. This is an insecticide that can cause infertility in men. It also causes neurological disorders and kidney and liver damage.

  • Dibromochloropropane. This is a pesticide that can cause infertility in men. It may contribute to certain cancers.

Exposure to some chemicals may cause symptoms like an allergic reaction. This includes synthetic and natural substances found in:

  • Carpeting

  • Plastics

  • Perfumes

  • Plants

  • Paint

  • Cigarette smoke

There are many other chemicals under review. The problem continues to grow because more types of chemicals are made over time.

What is multiple chemical sensitivity?

While some chemicals are known to cause problems, some people are sensitive to a wide range of substances. This is known as multiple chemical sensitivity. It is also called idiopathic environmental intolerance (IEI).

Multiple chemical sensitivity or IEI is under debate in the medical field at this time. Some healthcare providers question if the underlying illness is not medical but psychiatric, and that the symptoms are caused by anxiety. Others say it is a medical disorder triggered by exposures to chemicals, electromagnetic forces, or other substances in the environment. Symptoms often begin with a short-term, severe chemical exposure, such as a chemical spill. Or they may happen after exposure over time.

After this, low levels of chemicals found in everyday materials can trigger physical symptoms in people with multiple chemical sensitivity. This includes chemicals in soaps, detergents, cosmetics, and newspaper inks.

What are the symptoms of multiple chemical sensitivity?

Below are the most common symptoms. But each person's symptoms can vary. Symptoms may include:

  • Headaches

  • Rashes

  • Asthma

  • Muscle and joint aches

  • Fatigue

  • Memory loss

  • Confusion

Is this a recognized clinical diagnosis?

At this time, multiple chemical sensitivity, or IEI, is a diagnosis under debate. Some of the medical field lean toward the symptoms being physical signs of psychiatric illness. This means they think it’s not a primary medical illness. Others in the medical field and some organizations agree these are physical reactions to substances. There is ongoing review about this condition as a clinical diagnosis. Talk with your healthcare provider to learn more.

Online Medical Reviewer: Daphne Pierce-Smith RN MSN
Online Medical Reviewer: Eric Perez MD
Online Medical Reviewer: Rita Sather RN
Date Last Reviewed: 2/1/2021
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